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Chin. Phys. B, 2011, Vol. 20(12): 127202    DOI: 10.1088/1674-1056/20/12/127202
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

A pure spin-current injector of semiconductor quantum dots with Andreev reflection and Rashba spin–orbit coupling

Ye Cheng-Zhi(叶成芝)a)†, Nie Yi-Hang(聂一行)b), and Liang Jiu-Qing(梁九卿) b)
a Institute of Condensed Matter Physics and School of Sciences, Linyi University, Linyi 276005, Shandong Province, China; b Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006, China
Abstract  We propose a four-terminal device consisting of two parallel quantum dots with Rashba spin-orbit interaction (RSOI), coupled to two side superconductor leads and two common ferromagnetic leads, respectively. The two ferromagnetic leads and two quantum dots form a ring threaded by Aharonov-Bohm (AB) flux. This device possesses normal quasiparticle transmission between the two ferromagnetic leads, and normal and crossed Andreev reflections providing conductive holes. For the appropriate spin polarization of the ferromagnetic leads, RSOI and AB flux, the pure spin-up (or spin-down) current without net charge current in the right lead, which is due to the equal numbers of electrons and holes with the same spin-polarization moving along the same direction, can be obtained by adjusting the gate voltage, which may be used in practice as a pure spin-current injector.
Keywords:  Rashba spin-orbit coupling      Andreev reflection      pure spin current without net charge current  
Received:  01 August 2011      Revised:  18 October 2011      Accepted manuscript online: 
PACS:  72.25.Dc (Spin polarized transport in semiconductors)  
  71.70.Ej (Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)  
  74.45.+c (Proximity effects; Andreev reflection; SN and SNS junctions)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10775091, 10774094, 10974124, and 11047172), the Excellent Youth and Midlife Scientist Scientific Research Encouragement Foundation of Shandong Province, China (Grant No. BS2010DS006), and the Doctor Research Startup Foundation of Linyi University, China (Grant No. BS201023).

Cite this article: 

Ye Cheng-Zhi(叶成芝), Nie Yi-Hang(聂一行), and Liang Jiu-Qing(梁九卿) A pure spin-current injector of semiconductor quantum dots with Andreev reflection and Rashba spin–orbit coupling 2011 Chin. Phys. B 20 127202

[1] vZutić I, Fabian J and Das Sarma S 2004 Rev. Mod. Phys. 76 323
[2] Wolf S A, Awschalom D D, Buhrman R A, Daughton J M, von Moln'ar S, Roukes M L, Chtchelkanova A Y and Treger D M 2001 Science 294 1488
[3] Murakami S, Nagaosa N and Zhang S C 2003 Science 301 1348
[4] Sinova J, Culcer D, Niu Q, Sinitsyn N A, Jungwirth T and MacDonald A H 2004 Phys. Rev. Lett. 92 126603
[5] Kato Y K, Myers R C, Gossard A C and Awschalom D D 2004 % Science 306 1910
[6] Wunderlich J, Käestner B, Sinova J and Jungwirth T 2005 Phys. Rev. Lett. 94 047204
[7] Hubner J, Ruhle W W, Klude M, Hommel D, Bhat R D R, Sipe J E and van Driel H M 2003 Phys. Rev. Lett. 90 216601
[8] Stevens M J, Smirl A L, Bhat R D R, Najmaie A, Sipe J E and van Driel H M 2003 Phys. Rev. Lett. 90 136603
[9] Bhat R D R, Nastos F, Najmaie A and Sipe J E 2005% Phys. Rev. Lett. 94 096603
[10] Tarasenko S A and Ivchenko E L 2005 JETP Lett. % 81 231
[11] Wang B, Wang J and Guo H 2003 Phys. Rev. B 67 092408
[12] Romeo F and Citro R 2006 Eur. Phys. J. B 50 483
[13] Watson S K, Potok R M, Marcus C M and Umansky V 2003 % Phys. Rev. Lett. 91 258301
[14] Sharma P 2005 Science 307 531
[15] Dong B, Cui H L and Lei X L 2005 Phys. Rev. Lett. 94 066601
[16] Shangguan M, Sun Q F, Wang J and Guo H 2006 Phys. Rev. % B 73 125349
[17] Pareek T P 2004 Phys. Rev. Lett. 92 076601
[18] Wang J, Chan K S and Xing D Y 2005 Phys. Rev. B 72 115311
[19] Lü H F and Guo Y 2007 Appl. Phys. Lett. 91 092128
[20] Gong W J, Zheng Y S and Lü T Q 2008 % Appl. Phys. Lett. 92 042104
[21] Chi F and Zheng J 2008 % Appl. Phys. Lett. 92 062106
[22] Chi F, Zheng J and Sun L L 2008 % Appl. Phys. Lett. 92 172104
[23] Greenbaum D, Das S, Schwiete G and Silvestrov P G 2007 % Phys. Rev. B 75 195437
[24] Chen Z G, Wang B G, Xing D Y and Wang J 2004 % Appl. Phys. Lett. 85 2553
[25] Zhu Y, Lin T H and Sun Q F 2004 Phys. Rev. B 69 121302(R)
[26] Sun Q F, Wang J and Lin T H 1999 Phys. Rev. B 59 3831
[27] Zhu Y, Sun Q F and Lin T H 2001 Phys. Rev. B 65 024516
[28] Xing Y X, Wang B, Wei Y D, Wang B G and Wang J 2004 Phys. Rev. B 70 245324
[29] Xing Y X, Sun Q F and Wang J 2007 Phys. Rev. B 75 125308
[30] Deutscher G and Feinberg D 2000 Appl. Phys. Lett. 76 487
[31] Peng J, Wang B G and Xing D Y 2005 Phys. Rev. B 71 214523
[32] Zhang Y P, Yu H, Gao Y F and Liang J Q 2005 Phys. Rev. B 72 205310
[33] Pan H and Lin T H 2006 Phys. Rev. B 74 235312
[34] Ye C Z, Li Z J, Nie Y H and Liang J Q 2008 J. Appl. Phys. 104 053721
[35] Peng J, Yu H L and Zuo F 2010 Chin. Phys. B 19 127402
[36] Wang S Y, Liu S B and Li L W J 2010 Chin. Phys. B 19 084101
[37] Yu H L, Peng J and Jin B X 2010 Chin. Phys. B 19 087203
[38] Hammar P R and Johnson Mark 2001 Appl. Phys. Lett. 79 2591
[39] Hanbicki A T, Jonker B T, Itskos G, Kioseoglou G and Petrou A 2002 Appl. Phys. Lett. 80 1240
[40] Sun Q F, Wang J and Guo H 2005 Phys. Rev. % B 71 165310
[41] Sun Q F and Xie X C 2006 Phys. Rev. B 73 235301
[42] Souza F M, Jauho A P and Egues J C 2008 Phys. Rev. B 78 155303
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